/* eslint-disable space-before-function-paren */
/* eslint-disable space-before-function-paren */
<template>
  <div class="Categories">
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog">添加分类</el-button>
        </el-col>
      </el-row>

      <!-- 商品分类列表区域 -->
      <tree-table
        class="table-mt"
        :data="catelist"
        :columns="columns"
        :show-row-hover="false"
        :selection-type="false"
        :expand-type="false"
        show-index
      >
        <!-- 是否有效模版 -->
        <template slot="isOK" slot-scope="scope">
          <i
            class="el-icon-success"
            v-if="scope.row.cat_deleted === false"
            style="color:lightgreen;"
          ></i>
          <i class="el-icon-error" v-else style="color:red;"></i>
        </template>
        <!-- 排序模版  -->
        <template slot="order" slot-scope="scope">
          <el-tag size="mini" v-if="scope.row.cat_level ===0">一级</el-tag>
          <el-tag size="mini" type="success" v-else-if="scope.row.cat_level ===1">二级</el-tag>
          <el-tag size="mini" type="warning" v-else-if="scope.row.cat_level ===2">三级</el-tag>
        </template>
        <!-- 操作模版 -->
        <template slot="opt">
          <el-button type="primary" size="mini" icon="el-icon-edit">编辑</el-button>
          <el-button type="danger" size="mini" icon="el-icon-delete">删除</el-button>
        </template>
      </tree-table>

      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="querInfo.pagenum"
        :page-sizes="[3, 5, 10, 15]"
        :page-size="querInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加分类对话框 -->
    <el-dialog
      title="添加分类"
      :visible.sync="addCateDialogVisible"
      width="50%"
      @close="resetAddCateList"
    >
      <!-- 表单区域 -->
      <el-form
        :model="addCateForm"
        :rules="addCateFormRules"
        ref="addCateFormRef"
        label-width="100px"
      >
        <el-form-item label="分类名称：" prop="cat_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="父级分类：">
          <el-cascader
            expand-trigger="hover"
            :props="cascaderProps"
            :options="ParentCateList"
            v-model="selectedKeys"
            @change="parentCateChange"
            clearable
            change-on-select
          ></el-cascader>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">新 增</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 商品分类数据列表，默认为空
      catelist: [],
      querInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5
      },
      //   总数据条数
      total: 0,
      // 表格的列
      columns: [
        { label: '分类名称', prop: 'cat_name' },
        {
          label: '是否有效',
          type: 'template',
          template: 'isOK'
        },
        {
          label: '排序',
          type: 'template',
          template: 'order'
        },
        {
          label: '操作',
          type: 'template',
          template: 'opt'
        }
      ],
      // 控制添加分类对话框显示隐藏
      addCateDialogVisible: false,
      // 添加分类表单信息
      addCateForm: {
        cat_name: '',
        cat_pid: 0,
        cat_level: 0
      },
      // 分类名称验证
      addCateFormRules: {
        cat_name: [
          { required: true, message: '请输入分类名称', trigger: 'blur' }
        ]
      },
      ParentCateList: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      selectedKeys: []
    }
  },
  // eslint-disable-next-line space-before-function-paren
  async mounted() {
    this.getCateLists()
  },
  methods: {
    async getCateLists() {
      const { data: res } = await this.$http.get('categories', {
        params: this.querInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取列表失败')
      }
      console.log(res.data)
      // 保存数据到data中
      this.catelist = res.data.result
      //   保存总数
      this.total = res.data.total
    },
    // 监测分页的页码变化
    handleSizeChange(newSize) {
      this.querInfo.pagesize = newSize
      this.getCateLists()
    },
    // 检测页数的变化
    handleCurrentChange(newPage) {
      this.querInfo.pagenum = newPage
      this.getCateLists()
    },
    // 添加分类
    showAddCateDialog() {
      this.getParentCateList()
      this.addCateDialogVisible = true
    },
    // 获取父级分类列表数据
    async getParentCateList() {
      const { data: res } = await this.$http.get('categories', {
        params: { type: 2 }
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取父级分类列表数据失败')
      }

      console.log(res.data)
      this.ParentCateList = res.data
    },
    // 父级级联选择器
    parentCateChange() {
      console.log(this.selectedKeys)
      this.addCateForm.cat_pid = this.selectedKeys[this.selectedKeys.length - 1]
      this.addCateForm.cat_level = this.selectedKeys.length
    },
    // 退出窗口时清空窗口内容
    resetAddCateList() {
      this.$refs.addCateFormRef.resetFields()
      this.addCateForm.cat_pid = 0
      this.addCateForm.cat_level = 0
      this.selectedKeys.length = 0
    },
    // 添加分类操作
    async addCate() {
      const { data: res } = await this.$http.post(
        'categories',
        this.addCateForm
      )
      if (res.meta.status !== 201) {
        return this.$message.error('添加分类失败')
      }
      this.$message.success('添加分类成功')
      this.getCateLists()
      this.addCateDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.table-mt {
  margin-top: 15px;
}
.el-cascader {
  width: 100%;
}
</style>
